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Robin hood aims a 500 g arrow at a 2 kg bird perched on a tree. The arrow is released with a speed of 40 m/s at an angle 30 degrees to the horizon. The arrow is travelling horizontally when it strikes the bird. How far from the tree base do the bird and arrow land?
Name the ionic compound form when an Magnesium reacts with chlorine.
A 1.1 kg block of ice is initially at a temperature of -5°C. If 4.8 ? 105 J of heat are added to the ice, what is the final temperature of the resulting liquid water
A young man owns a canister vacuum cleaner marked "532 W [at] 120 V" and a Volkswagen Beetle, which he wishes to clean. what is the actual power delivered to the cleaner
We supply 132.4 Joules of heat to an engine with 15.60% efficiency. How much work can the engine do
A 2.00-g charged particle is released from rest in a region that has a uniform electric field = (160 N/C), Determine the charge of the particle
When a mass of 7.15 kg is attached to the spring, the spring stretches by 0.0105 m. Calculate the kinetic energy the mass possesses
An electric field of 9.45 105 V/m is desired between two parallel plates, each of area 37.0 cm2 and divided by 2.45 mm of air. What charge must be on each plate.
assume a bar 2 m long expands 0.6 cm when heated. By how much will a bar 100 m long of the same material expand when similarly heated.
Old naval ships fired 14 kg cannon balls from a 250 kg cannon. It was very important to stop the recoil of the cannon, since otherwise heavy cannon would go careening across the deck of the ship. In one design, a large spring with spring constant 2..
For 140 keV gamma rays, the mass attenuation coefficients for hydrogen and oxygen are 0.26 and 0.14 cm^2/g, respectively. What is the mean free path in water at this energy
Bob is standing 1.00m above the ground. he is holding an RPG at an angle of 30 degrees. how far from Bob will the missle land
A lawn mower has a flat, rod-shaped steel blade that rotates about its center. The mass of the blade is 0.59 kg and its length is 0.50 m. to what height would the blade rise
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